Gaya APA
Tweeten, Luther. (1992).
Agricultural trade : principle and policies .
Boulder:
Westview Press.
Gaya Chicago
Tweeten, Luther.
Agricultural trade : principle and policies.
Boulder:
Westview Press,
1992.
Buku.
Gaya MLA
Tweeten, Luther.
Agricultural trade : principle and policies.
Boulder:
Westview Press,
1992.
Buku.
Gaya Turabian
Tweeten, Luther.
Agricultural trade : principle and policies.
Boulder:
Westview Press,
1992.
Buku.